10"w X 10"h [Duct Opening] 4-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 11.75"H] w25h25 and durability

and durability

+ Product Details Perfect Fit & Easy Sizing - Designed for a 26" x 16" OR 16" x 26" duct opening (measured at the opening)

actual front end outer dimensions are approximately 36 5/8" width X 18 5/8" height

It comes with two versatile mounting base options—solid and ring—making installation simple and flexible

no sharp edges

10"w X 10"h [Duct Opening] 4-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 11.75"H] w25h25 and durability+ Product Details Size 10"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" width X 11. 75" height. High Quality High quality steel with counter sunk screw holes (screws included) and no sharp edges. Equipped with a lever for easy airflow adjustment and dampening. Airflow Control Adjustable airflow lever allows precise control over the direction and volume of air. Installation